Improvement in extension gas-fixtures



H. COESTER. Extension Gas Fixture- Patented Aug.' 2, 1870,

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NITED STATES PATENT OFFICE,

' HENRY coEs'TEE, 0E NEw YORK, N. Y.

Specication forming part of Letters Patent No. 105,91 l, dated August 2, 1870.

To @ZZ-whom t may concern: .y

Be it known that I, HENRY CoEsTER, of the city, county,and State of N ew York, have invented certain Improvements in Extension Gas-Fixtures 5 and I do hereby declare that the I following is a full and exactdescription thereof, reference being had to the accompanying drawings, making part of this speciiication- Figure 1 being a side view of the extensionflxture when closed or drawn up; Fig. 2, a corresponding view, on a smaller scale, of the lixture when extended or lowered; Fig. 3, a top -view of the regulator or device by which the connections are kept in an upright position at all times; Fig. 4, a central longitudinal vertical section of the same; Fig. 5, ahorizontal section of one of the cord-guides; and Fig. 6, a central vertical sectionoi' one of the A joint-connections'of thetubes.

Like letters designate corresponding parts in all of the figures.

Iiet A representthe extension tubes, jointed at aa. A single spring-pulley or fusee-barrel, B, is employed, and a single cord, C, extending therefrom to the lower part of the X- ture. This single cord is located centrally within the extension -tubes, passing successively through guide-apertures eZ UZ in the several middle connecting-bars, D D, of the tubes Thus a simple, complete, and neat arrangement is obtained, and one less liable to get out of ordertha'n other plans heretofore in use.

The regulator for keeping the fixture inthe proper position as the angles of the connecting-tubes vary consists of separately-turning plugs f f, screwed upon the lower connection, E, andto these or to the connections g g, united thereto, are respectively attached or formed therewith short pins or studs h h, terminating in round heads or balls t' fZ, which t loosely in the eyes or sockets Z Z of a cross-bar, m, secured upon the center of the connection E, substantially as shown, obliquely to `the line of the connection. The lower` end of the cord C is attached tothe connection at this point.

The arms of the bar m are of equal length, and

cause both plugs f f to turn simultaneously and vequally as the tubes change their angles, the balls Z t' moving in opposite'directions. The saine or a similar arrangement is made with the upper connection of theflxture. The plugs 'i t are secured to the connection E by inside nuts and washers, n n, the plugs fitting in conical barrels. Thus the joint, is completely concealed, and cannot be disarranged, nor be liable to leak gas. A similar connection is made between one tube and another, as shown in Fig. 6.. A sleeve or nut, p, to which one connection, r, is screwed, has a conical bore which ts over the conical plug of the other connection, s, and the two are secured to gether by a nut, t, and washer u inside of the connection o".

What I claim as my invention, and desire to secure by Letters Patent, is-

l. The combination and arrangement of the guide-apertures d d and central cord, C, substantially as herein specied.

2. The regulator composed of the plugs or barrels f f, projecting pins h h, with heads t Z, and the cross-bar m, with its sockets Z Z, all arranged substantially as and 'for the purpose herein specified.

HENRY COESTER.

Witnesses:

AENo R. DOUAI,

Jos. ScHMALENEAcH. 

